How to MySQLDump with For Channel to set up multi-source replication?

I'm trying to set up multi-source replication. But, when I try and import the second database I get the error: ERROR 3079 (HY000) at line 28: Multiple channels exist on the slave. Please provide channel name as an argument. How can I supply the channel name to mysqldump I run the command: mysqldump -h1.2.3.4 -P3306 -umysqldumpuser -ppassword --dump-slave --apply-slave-statements --include-master-host-port --single-transaction --databases db_name -E -R -q -c --max_allowed_packet=2G | mysql -S/var/run/mysqld/mysqld.sock -umysqldumpuser -ppassword The first dump is fine, as I can then run: RESET SLAVE ALL FOR CHANNEL ""; CHANGE MASTER TO . . . FOR CHANNEL '; So it is now replicating over a channel. But I can't dump the second one as it gives me the above error. The only way I can see this working, would be to dump the first one, stop replication, make a note of the logfile and pos, and then wipe the slave connection, leaving replication to the first database off while I dump the second one. Only then can I start replication to both databases at the same time. This is highly impractical, especially if you are looking to combine connections from numerous locations. I have searched the documents, but can't find any reference to using mysqldump and channels.